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Proceedings Paper

Time-division-multiplexed matrix-addressed FOS network of three dimensions
Author(s): Shichuang Hu; Jianmin Ran; Qiyan Li
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Paper Abstract

A group of sensors in a ladder OFS network, in general, employs two main optical fibers, the feed fiber and the return fiber. As another feed fiber, called nth feed fiber, is introduced into the ladder network, another group of sensors which uses the original return fiber path and the nth feed fiber as its feed path can be identified with address code n. On the other hand, as another return fiber, called mth return fiber, is introduced into the ladder network, a new sensor group which uses original feed fiber path and the mth return fiber as its return path also can be identified with the address code m. When both the nth feed fiber and the mth return fiber are introduced into a ladder network, a 3-dimensional OFS network is formed. In a basic ladder OFS network, the individual sensor is identified by a time coded system with the detected kth pulse. Therefore, the 3-dimensional network can be identified by 3 integer variables (k, m, n). When k, m, n take the values from 1 to N, it can be achieved in a 3- dimensional OFS network that the N X N X N sensors are monitored by means of 2 X N optical fibers. A temperature sensor system using the 3-D network is being implemented in our lab.

Paper Details

Date Published: 5 March 1993
PDF: 5 pages
Proc. SPIE 1797, Distributed and Multiplexed Fiber Optic Sensors II, (5 March 1993); doi: 10.1117/12.141295
Show Author Affiliations
Shichuang Hu, Huazhong Univ. of Science and Technology (China)
Jianmin Ran, Huazhong Univ. of Science and Technology (China)
Qiyan Li, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 1797:
Distributed and Multiplexed Fiber Optic Sensors II
John P. Dakin; Alan D. Kersey, Editor(s)

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